Korean J Med.  2005 Mar;68(3):334-339.

Two cases of localized muscle involement by polyarteritis nodosa

Affiliations
  • 1Division of Allergy and Rheumatology, Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea. byoo@amc.seoul.kr
  • 2Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.

Abstract

Polyarteritis nodosa (PAN) is a multi systemic disease, occasionally described as limited forms of the disease. Localized form of PAN is usually associated with better prognosis. We describe unusual two cases of patients who has suffered from sudden onset of low extremity pain by localized forms of polyarteritis nodosa. Magnetic resonance imaging of the lower legs showed abnormal signal intensity of the suspected muscle. Acute necrotizing arteritis with myopathy has been revealed by muscle biopsy. The symptom of the patient has been improved soon after corticosteroid administration. Muscle biopsy of symptomatic muscles or MRI-directed biopsies can be useful to diagnose this case as PAN with localized myopathies.

Keyword

Polyarteritis nodosa; Myopathy

MeSH Terms

Biopsy
Extremities
Humans
Leg
Magnetic Resonance Imaging
Muscles
Muscular Diseases
Polyarteritis Nodosa*
Prognosis
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